Watts LF709-OSY 10 - Part of the LF709 Series ZA100F-6NH With features that support longevity

With features that support longevity

This 1 inch lead free reduced pressure zone backflow preventer assembly with its exclusive design incorporating the patented air-in and water-out principle for protection during an emergency condition prevents the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements

This combination boiler trim out package is designed for use on commercial and residential closed loop hydronic heating systems

cover O-ring and a retainer wire

ZM400S-4IC

Watts LF709-OSY 10 - Part of the LF709 Series ZA100F-6NH With features that support longevityThis 10 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. This assembly consists of an fused epoxy coated cast iron body, outside stem and yoke resilient seated gate valves, test cocks, and a modular check design for easy maintenance with center stem